Bump org.springframework.security:spring-security-core

Bumps [org.springframework.security:spring-security-core](https://github.com/spring-projects/spring-security) from 5.0.6.RELEASE to 5.7.12.
- [Release notes](https://github.com/spring-projects/spring-security/releases)
- [Changelog](https://github.com/spring-projects/spring-security/blob/main/RELEASE.adoc)
- [Commits](spring-projects/spring-security@5.0.6.RELEASE...5.7.12)

---
updated-dependencies:
- dependency-name: org.springframework.security:spring-security-core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

s-pipes-parent/pom.xml

@@ -21,7 +21,7 @@
         <jdk.version>1.8</jdk.version>
         <org.apache.jena>3.17.0</org.apache.jena>
         <org.springframework.version>5.0.7.RELEASE</org.springframework.version>
-        <org.springframework.security.version>5.0.6.RELEASE</org.springframework.security.version>
+        <org.springframework.security.version>5.7.12</org.springframework.security.version>
         <com.fasterxml.jackson.version>2.9.6</com.fasterxml.jackson.version>
         <org.eclipse.rdf4j.version>3.7.3</org.eclipse.rdf4j.version>
         <cz.cvut.kbss.jopa.version>0.18.7</cz.cvut.kbss.jopa.version>